# JouleBug vs EfeelAI

The clearest difference is in-app purchases: JouleBug at none against EfeelAI's 2. JouleBug also leads on iOS requirement (13.0 vs 15.6). EfeelAI's advantage is update cadence (every 9 days vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. EfeelAI sells 2 in-app purchases, starting at $4.99 per month. JouleBug asks for nothing beyond the download.

JouleBug ships an update every 3 months, EfeelAI every 9 days. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | JouleBug | EfeelAI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (41 ratings)](https://appshunter.io/ios/app/joulebug-legacy/id391199306/reviews)** | — |
| Number of ratings | **41** | — |
| Positive reviews | 70.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | Free | — |
| Size | 70 MB | 116 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [Cleanbit Systems, Inc.](https://appshunter.io/developer/391199309) | [Selimhan Bek](https://appshunter.io/developer/1562376866) |

## What reviewers say

### JouleBug

[App page](https://appshunter.io/ios/app/joulebug-legacy/id391199306)

This app is designed to enhance workplace experiences by fostering environmental and social stewardship through collective action. It offers tailored sustainability programs, tracks impact metrics, and encourages employee engagement through challenges and social interactions.

**Highlights:** Employee Engagement Hub, Tailored Sustainability Programs, Metrics for Impactful Insights, Inspirational Challenges, Dynamic Social Interactions

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 💡 Great concept and idea
- 👍 Fun and engaging
- 🌍 Motivates environmental action
- 💡 Educational and informative
- 🤝 Social and competitive aspect

**What reviewers complain about**

- 🐛 App crashes frequently
- 🐛 App is buggy
- 🐛 Server errors
- 🐛 Incomplete features/buttons
- 🐛 Outdated content (challenges, actions)

**Reported bugs**

- App closes when buzzing
- Server error prevents usage
- App won't load after initial setup
- Login errors, requires Facebook
- Accidental buzzes cannot be deleted

**Requested features**

- Add more sustainable actions/challenges
- Update book and movie options
- Add a clothing section with sustainable options
- Allow deletion of unintentional buzzes
- Favorite/categorize activities


### EfeelAI

[App page](https://appshunter.io/ios/app/efeelaismart-saving-assistant/id6745459088)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Plan | $4.99 | per month |
| Pro Plan | $5.99 | per month |


## Frequently asked questions

### Is JouleBug free?

JouleBug is free to download, with no in-app purchases.

### Is EfeelAI free?

EfeelAI is free to download, with in-app purchases available.

### Do JouleBug or EfeelAI have ads?

Neither JouleBug nor EfeelAI shows ads.

### Which is updated more often, JouleBug or EfeelAI?

JouleBug ships an update every 3 months, and EfeelAI every 9 days. Most recently, JouleBug was updated on October 21, 2026 and EfeelAI on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*